How do I convert PNG to PDF?

Upload your PNG file using the box above, confirm PDF as the output format, then select Convert. The converted file is ready to download as soon as processing finishes — usually in a few seconds.

Is converting PNG to PDF free?

Yes, and there is nothing to sign up for. Every conversion route is free on every plan — paying raises limits such as file size and how many conversions you get, and removes advertising. It never unlocks a format, adds a watermark or degrades the output.

Will the quality change when converting to PDF?

PDF uses lossy compression, so some data is discarded to keep the file small. The default quality setting is tuned to be visually or audibly transparent for most material, and you can raise it in the conversion settings.

What happens to my file afterwards?

The uploaded file is deleted as soon as the conversion completes, and the converted file is removed automatically once its retention window ends. Download links are signed and expire within minutes.

pngpdf

Convert PNG to PDF

Free online converter for PNG files. Fixed-layout format for sharing and printing. Nothing to install, no watermark, and every file is deleted automatically.

Drag and drop your files

Upload a PNG file to convert it to PDF. Up to 3 files at once, 100 MB each.

Free · up to 3 files · 100 MB each · files deleted automatically after 1 hour.

About PNG and PDF

PNG .png

A lossless image format built for graphics rather than photographs. Every pixel it stores comes back exactly as it went in, and it carries a full alpha channel for transparency.

Good for

Lossless — no generation loss no matter how often you re-save
Full 8-bit alpha, so edges blend cleanly over any background
Sharp on text, screenshots, logos and line art

Trade-offs

Much larger than JPEG for photographs
No animation in the baseline format
Large photographic PNGs are slow to transfer

image/png

PDF .pdf

A fixed-layout page format. A PDF describes exactly where every glyph and line sits, so it looks identical everywhere — which is precisely what makes it awkward to edit.

Good for

Identical layout on every device, screen and printer
Embeds its own fonts, so nothing reflows or substitutes
The accepted format for contracts, invoices and forms

Trade-offs

Not built for editing — text is positioned, not flowing
A scanned PDF is just images until text recognition is run
Reflows badly on small screens

application/pdf

PNG and PDF side by side

PNG compared with PDF
	PNG	PDF
Compression	Lossless	Mixed — per object
Transparency	Yes — 8-bit alpha	Yes
Animation	No	No
Typically used for	Screenshots, logos, UI assets, anything with transparency	Contracts, invoices, forms, anything printed

What changes when you convert PNG to PDF

Transparency is flattened

PNG carries an alpha channel and PDF has none, so anything transparent has to become a solid colour. We composite onto white. If the image was designed to sit over a coloured background, convert to a format that keeps alpha instead — or expect a white box around it.

The image is placed, not read

Your PNG is embedded on a PDF page as a picture. Any text visible in the image stays part of the picture and is not searchable. To make it selectable, run text recognition on the resulting PDF afterwards.

Centred on a page, never enlarged

The image is placed on an A4 page by default with a 10 mm margin, scaled down to fit and centred. It is never scaled up: a small PNG stays its own size in the middle of the page rather than being stretched to fill it, because upscaling would only make it blurry. Page size, orientation and margin are all adjustable before you convert.

The PDF can be larger than the image

The picture is embedded losslessly, so nothing is degraded on the way in — but a PNG that was already efficiently compressed does not stay that size once it is stored this way, and the PDF wrapper adds its own overhead on top. Converting an image to PDF is a way of making it printable and easy to send, not a way of making it smaller.